Hearing device
US7305098B2 · kind B2 · utility
3Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 2002 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | May 24, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/604
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hearing device has an electrical/acoustical output converter that communicates with ambient air through a membrane. The membrane separates two spaces. Each space communicates with ambient air through a passage that substantially blocks acoustical signals in the range of the audible spectrum and passes acoustical signals at a frequency lower than the audible spectrum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.